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Due to Shareholders of Acquired Companies - Summary of Amounts Due to Shareholders of Acquired Companies (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017
Business Acquisition [Line Items] |  |
Total due to shareholders of acquired companies | $ 74,943 | $ 79,569
Less: Current portion of due to shareholders of acquired companies | 35,431 | 40,140
Due to shareholders of acquired companies, less current portion | 39,512 | 39,429
Universidade Anhembi Morumbi (UAM Brazil) |  |
Business Acquisition [Line Items] |  |
Total due to shareholders of acquired companies |  | 45,206
Universidade Anhembi Morumbi (UAM Brazil) | Related Party Notes Payable |  |
Business Acquisition [Line Items] |  |
Total due to shareholders of acquired companies | $ 45,955 |
Universidade Anhembi Morumbi (UAM Brazil) | Certificados de Depósitos Interbancários (CDI) | Related Party Notes Payable |  |
Business Acquisition [Line Items] |  |
Basis spread on variable rate | 2.00% |
University of St. Augustine for Health Sciences, LLC (St. Augustine) |  |
Business Acquisition [Line Items] |  |
Total due to shareholders of acquired companies | $ 11,550 | 11,550
University of St. Augustine for Health Sciences, LLC (St. Augustine) | Related Party Notes Payable |  |
Business Acquisition [Line Items] |  |
Interest Rate % | 7.00% |
Monash South Africa (MSA) |  |
Business Acquisition [Line Items] |  |
Total due to shareholders of acquired companies | $ 9,626 | 9,571
Universidad Tecnologica Centroamericana (UNITEC Honduras) |  |
Business Acquisition [Line Items] |  |
Total due to shareholders of acquired companies | 3,447 | 3,813
Faculdade Porto-Alegrense (FAPA) |  |
Business Acquisition [Line Items] |  |
Total due to shareholders of acquired companies | 3,123 | 3,084
IADE Group |  |
Business Acquisition [Line Items] |  |
Total due to shareholders of acquired companies | $ 1,242 | 2,374
IADE Group | Related Party Notes Payable |  |
Business Acquisition [Line Items] |  |
Interest Rate % | 3.00% |
CH Holding Netherlands B.V. (CH Holding) |  |
Business Acquisition [Line Items] |  |
Total due to shareholders of acquired companies | $ 0 | $ 3,971

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